Models
All dollars figures are taken from the 1997 Orion Blue Book.
*pieces I've owned
| Model | Type | Year | Description | New |
| XX00 Series | ||||
| 180 | EQ | 76-82 | 300 | |
| 1800 * | EQ | 76-83 | parametric | 400 |
| 2100 * | PreAmp | 76-83 | w/parametric eq | 1125 |
| 2100L | PreAmp | 76-83 | 975 | |
| 2200 * | Pwr Amp | 76-82 | 100 wpc | 550 |
| 2201 | Pwr Amp | 76-82 | 100 wpc | 600 |
| 2300 | Pwr Amp | 76-82 | 150 wpc | 775 |
| 2400 | Pwr Amp | 76-80 | 200 wpc w/analog meters | 850 |
| 2400L | Pwr Amp | 76-80 | 200 wpc w/LED meters | 850 |
| 2401 | Pwr Amp | 76-82 | 250 wpc w/LED meters | 1050 |
| 2500 | Pwr Amp | 76-78 | 300 wpc w/analog meters | 1250 |
| 2600 * | Pwr Amp | 76-82 | 400 wpc w/analog meters | 1600 |
| 2700B | EQ | 75-77 | 550 | |
| 2800 | EQ | 76-84 | parametric | 700 |
| 2900 | PreAmp | 76-83 | 550 | |
| 2922 * | Int amp | 76-79 | 100 wpc | 850 |
| 3000 | PreAmp | 76-83 | 350 | |
| 3022 | Int amp | 76-79 | 100 wpc | 700 |
| 3031 | Int amp | 76-79 | 50 wpc | 550 |
| 3100 * | Pwr Amp | 76-83 | 50 wpc | 350 |
| 3200 | Tuners | 76-83 | digital | 500 |
| 4000 * | Crossover | 76-84 | electronic | 275 |
| 4200 * | Signal Processor | 77-84 | speaker switch | 95 |
| 5000 * | Signal Processor | 76-80 | noise reduction | 199 |
| 8000 * | Tuner | 76-83 | FM only | 800 |
| 5000A | Signal Proc | 80-85 | noise reduction | 199 |
| Mark Series | ||||
| MARK I | PreAmp | 70-73 | 550 | |
| MARK M | PreAmp | 73-76 | w/analog meters | 660 |
| MARK IB | PreAmp | 73-77 | w/eq 7 band | 825 |
| MARK II | Pwr Amp | 73-78 | 90 wpc | 400 |
| MARK IIB | Pwr Amp | 71-78 | 90 wpc | 450 |
| MARK III | Pwr Amp | 70-78 | 120 wpc | 700 |
| MARK IIIA | Pwr Amp | 73-80 | 120 wpc | 850 |
| MARK IIIC | Pwr Amp | 74-75 | 200 wpc | 900 |
| MARK IIICM | Pwr Amp | 73-75 | 200 wpc w/analog meters | 1000 |
| MARK IV | Pwr Amp | 71-78 | 60 wpc | 250 |
| MARK IVB | Pwr Amp | 72-73 | 60 wpc | 350 |
| MARK IVC | Pwr Amp | 73-74 | 100 wpc | 450 |
| MARK IVCM | Pwr Amp | 73-74 | 100 wpc | 550 |
| MARK IVD | Pwr Amp | 74-76 | 100 wpc | 500 |
| MARK IVDM | Pwr Amp | 74-76 | 100 wpc | 600 |
| MARK IX | PreAmp | 73-74 | w/eq 5 band | 450 |
| MARK IXB | PreAmp | 74-77 | 400 | |
| MARK VI | EQ | 73-75 | 500 | |
| MARK VI | Tuners | 71-74 | w/oscilloscope | 1050 |
| MARK VIB | Tuners | 74-77 | 1250 | |
| MARK VII | EQ | 76-77 | 11 band | 300 |
| MARK VIII | Tuners | 76-78 | 650 | |
| MARK X | Speakers | 73-77 | 400 | |
| MARK XI | Speakers | 73-77 | 550 | |
| MARK XII | Speakers | 73-74 | rosewood | 970 |
| MARK XII | Speakers | 73-74 | walnut | 950 |
| MARK XIV | Speakers | 73-77 | rosewood electrostatic | 2000 |
| MARK XIV | Speakers | 73-77 | walnut electrostatic | 1800 |
| MARK XVII | EQ | 74-75 | dual 11 band | 550 |
| MARK XXIII | Pwr Amp | 74-80 | 150 wpc | 950 |
| MARK XXIIIA | Pwr Amp | 74-80 | 150 wpc | 850 |
| MARK XXIV / 2400 | Pwr Amp | 76-77 | 200 wpc | 750 |
| MARK XXV / 2500 | Pwr Amp | 76-77 | 300 wpc | 1250 |
| MARK XXX* | PreAmp | 73-78 | 200 | |
| MARK XXXI | Pwr Amp | 76-81 | 50 wpc | 200 |
| MARK XXXIB | Pwr Amp | 76-81 | 50 wpc | 250 |
| Computer Direct-Line | ||||
| A-201 | Pwr Amp | 81-88 | 100 wpc | 650 |
| A-202 * | Pwr Amp | 85-91 | 100 wpc | 499 |
| A-301 * | Pwr Amp | 78-84 | 150 wpc | 850 |
| A-501 * | Pwr Amp | 78-88 | 250 wpc | 1050 |
| A-502 * | Pwr Amp | 87-91 | 200 wpc | 799 |
| A-1001 | Pwr Amp | 81-85 | 500 wpc | 1550 |
| C-101 * | Cassette | 82-88 | 3 head dolby B/C | 650 |
| C-102 * | Cassette | 85-91 | 2 head dolby B/C music search | 499 |
| D-102 * | CD | 87-91 | w/remote program 3 speed audible search | 599 |
| E-101 * | EQ | 82-91 | 2 band 32 frequency | 650 |
| E-102 * | EQ | 89-91 | 10 band | 499 |
| I-102 * | Int amp | 84-91 | 60 wpc 2-way tape copy external loop | 499 |
| P-101 * | PreAmp | 82-88 | dual volume phase control | 650 |
| RS-101 * | Signal Processor | A/B speaker switch for P101 | ||
| T-101 * | Tuners | 82-88 | 16 preset auto/manual tune level indicators | 650 |
| T-102 * | Tuners | 84-91 | 16 preset auto/manual tune | 349 |
| P-102 * | PreAmp | 85-91 | 3 digital tone memory | 449 |
| R-102 * | Receiver | 84-91 | 50 wpc | 499 |
| Professional Series | ||||
| P-50 * | Pwr Amp | 80-91 | 70 wpc | 600 |
| P-250 | Pwr Amp | 80-85 | 250 wpc | 1200 |
| P-500 | Pwr Amp | 80-91 | 500 wpc | 1700 |
| P-5070 | Pwr Amp | 90-91 | 300 wpc | 600 |
| X-10A | Pwr Amp | 79-91 | 100 wpc | 900 |
| X-15A | Pwr Amp | 79-91 | 150 wpc | 1100 |
| X-1P * | PreAmp | 80-85 | separate power supply MM-MC | 1200 |
| X-25A * | Pwr Amp | 79-85 | 250 wpc | 1500 |
| TWO Series | ||||
| A-14 * | Int amp | 79-85 | 140 wpc | 799 |
| A-7 | Int amp | 76-83 | 70 wpc | 499 |
| EQ-10 | EQ | 82-85 | 3 band parametric | 295 |
| PA-10 | PreAmp | 80-85 | 349 | |
| P-10 | Pwr Amp | 80-85 | 100 wpc | 399 |
| R-18 | Receiver | 180 wpc | ||
| R-12 | Receiver | 120 wpc | ||
| R-9 | Receiver | 76-82 | 90 wpc | 850 |
| R-6 | Receiver | 76-83 | 60 wpc | 675 |
| R-3C | Receiver | 76-80 | 30 wpc 2nd gen | 335 |
| R-2 | Receiver | 82-84 | 20 wpc | 299 |
| T-14 | Tuners | 79-84 | 599 | |
| T-7 | Tuners | 76-83 | 429 | |
| T-6 | Tuners | 80-84 | 329 | |
| T-3U | Tuners | 76-80 | 2nd gen TWO | 275 |
| C4 | Cassette | |||
| C-3A | Int amp | 76-80 | 50 wpc | 325 |
| C3D | cassette | 2nd gen TWO | ||
| RC1 * | remote | for cassette | ||